TY - GEN
T1 - Real-time implementation of HMM-based chord estimation in musical audio
AU - Cho, Taemin
AU - Bello, Juan P.
PY - 2009
Y1 - 2009
N2 - In this paper, we implement a real-time chord estimation system based on the hidden Markov model (HMM) using chroma features. HMMs, with the Viterbi decoding algorithm, have proven a powerful tool for chord recognition in polyphonic music signals. However, the direct application of the traditional, non-causal, decoding approach is not the optimal choice for real-time processing, with limited memory capabilities and no access to future observations. We propose a system of buffers and a modified decoding process that approximates offline results while minimizing the system's latency.
AB - In this paper, we implement a real-time chord estimation system based on the hidden Markov model (HMM) using chroma features. HMMs, with the Viterbi decoding algorithm, have proven a powerful tool for chord recognition in polyphonic music signals. However, the direct application of the traditional, non-causal, decoding approach is not the optimal choice for real-time processing, with limited memory capabilities and no access to future observations. We propose a system of buffers and a modified decoding process that approximates offline results while minimizing the system's latency.
UR - http://www.scopus.com/inward/record.url?scp=84905907351&partnerID=8YFLogxK
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M3 - Conference contribution
AN - SCOPUS:84905907351
SN - 9780971319271
T3 - Proceedings of the 2009 International Computer Music Conference, ICMC 2009
SP - 117
EP - 120
BT - Proceedings of the 2009 International Computer Music Conference, ICMC 2009
PB - International Computer Music Association
T2 - 2009 International Computer Music Conference, ICMC 2009
Y2 - 16 August 2009 through 21 August 2009
ER -